# A147490 (b-file synthesized from sequence entry)
1 1
2 1
3 1
4 1
5 3
6 5
7 13
8 17
9 35
10 51
11 1825
12 3971
13 48723
14 116645
15 1517741
16 3942921
17 214672131
18 697172557
19 31731412817
20 118373336977
21 6545880122717
22 27404882486137
23 4959503000804673
24 24825440098741127